Fuel-heater.



A. R. LONG.

FUEL HEATER.

PPLlcAmN man 1MM. |911.

1 $363,259. Patented Apr. 16, 1918.

Es PATENT ont* FUEL-HEATER.-

Speciication of Letters, Patent.

Patented A131216, i918.

Application led January 4, 1917. Serial No. 140,544.

To all whom t may concern:

Be it known that I, ALBERT R. LONG, a citizen ofthe United States, residing at Los Angeles, inthe county of Los Angeles and State of California, have invented new and useful Improvements in Fuel-Heaters, of which the following is a specification.

My object is to improve the lay-out and details of construction of a fuel heater for internal combustion engines and especially tion illustrating the heater and Aits featuresl of construction. v

Fig. 3 is a view` in vertical section as seen on the line 3---3v of lFig. 2.and particularly illustrates the manner in which the heater is positioned uponthe manifold and secured in aleak-proof manner.

Referring more particularly to the drawings, 10 indicates .an internal combustion engine which is provided with an intake manifold 11 and an exhaust manifold 12. As illustrated'in the drawings, these manifolds are positioned upon the same side of the engine, althoughthis is not a necessary featurev of construction. The intake manifold is fitted with a carbureter 13 through which a gaseous fuel is led to the engine cylinders.I

In order to heat this fuel, the intake manifold is partially inclosed within a jacketor heater which is supplied with hot exhaust gas from the exhaustmanifold, after which the gas is permitted to pass from the heater' partially inolose the vertical extension of the manifold as it leads to the carburetor. The upper portion of the jacket members do not entirely encompass the head ofthe manifold but pass ,partially around it, as illustrated in Fig. 3. A pair of ears 20 and 21 are formed upon the jacket member 14 and pass partially around the top of the manifold in a manner to more securely grip it. The inner faceof the entire marginal edge of each of the jacket members 14and 15 are formed with packing grooves 22 and 23 within which suitable asbestos packing is placed to vco prevent leakage ofthe gas from the chamber 19.

rIhe chamber 19 is supplied with exhaust gas from the manifold 12 through a vertically extending connectingl pipe .24. This' pipe is substantially U-shaped and one ofi-ts ends connects with an opening 25 in the' exhaust manifold. The other end passes-'into a screw-:plug 26 which is threaded into an opening 27 in the face ofthe j acketplate 14. It will thus be seen that as the burnt gases pass through the exhaust manifold, a portion of them will passdownwardly through the pipe 24 and into the heating compartment 19. `'While in this compartment it will completely surround the intake manifold and raise it' to a high'temperature. After the gas from the exhaust manifold has circulated through-the compartment 19, it will pass outwardly through a conduit 28 and will be thereby led to a suitable point of exhaust.

VIn operation, the two parts of the jacket are first positioned around the intake manifold, as disclosed in the drawings, after which an opening is made through the side wall of the exhaust manifoldand in convenient relation to the opening 27 in the jacket 14. The connecting p-ipe 24a-is then properly positioned in relation to the two openingsso that burnt gas will flow into the chamber -19 around the intake manifold. The intake gas lpassing upwardly from the carbureter will be heated thereby and will pass into the cylindersk in a more perfect form of gas than were the paage-ways cold. The exhaust gas will then pass through the pipe 28 and away.

It will thus be seen that the apparatus here provided for heating the intake gas to be delivered to an enginey cylinder vis simplev inits construction, of few parts,- and maybe readily 'applied Without theservices of skilled mechanics.

I ciaim:

AThe combination with an intake manifold, of a fuel heater comprising a front jacket member and a rear jacket member; the upper edges of the jacket members pressing against opposite sides of the head of the manifold and corresponding side edges pressing against opposite sides of the Vertical extension of the manifold and the remaining marginal edges of the jacket members meeting; a U-shaped pipe mounted with one end tapped into the exhaust manifold and the other end tapped jacket member, packing between the marginal edges of the jacket members, and bolts through the marginal edges ofthe jacket members 'for connecting the jacket members rigidly together and tightly against the 20 manifold.

In testimony whereof 'I have signed my name to this specification.

. .ALBERT R., tiene..

@opten of? this patent may be obtained for ive cents each, by addressing the Commissioner ot' Patente* Washington, D. G.

through the front 15v 

